Three of the top in-house attorneys at CPS Energy have left the company as it battles the organization that operates Texas’ electrical grid for allegedly overcharging the company during the winter storm in February.

General counsel and chief legal officer Carolyn Shellman, deputy general counsel Zandra Pulis and deputy general counsel Abigail Ottmers submitted their resignations earlier this week, according to a report by the San Antonio Report. A company representative confirmed the departures and said the legal department will now have a total of 15 attorneys and staff.